A large portion of this navigable canal runs under Paris's famed boulevards.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

Marvel at the opulent Art Nouveau interior while dining on dirt-cheap French classics.

Order a boozy baba au rhum at the oldest patisserie in Paris.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

The first green space constructed on an elevated viaduct.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

This small, easily-overlooked sculpture recalls the first time Graz saw a live elephant.

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

An ornate private entrance to the Vienna subway built specifically for the emperor.

American soldiers discovered Europe's best one-liner at the end of World War II.

Double spiral staircases are not unheard of, but they are very rare.

A living museum of curated gardens honors 4,000 years of agriculture in the Santa Cruz River basin.

This bomb shelter-themed bar has barely changed since it opened.

First Joe Pagac sculpture; sculpture reflects native Tucson wildlife in an urban setting.

This church on a Tohono O'Odham reservation has stood since 1797.

One of the oldest Mexican restaurants in the United States air-dries its trademark beef in a dangling outdoor cage.

From working out of his garage to the James Beard semifinals, one Tucson baker has kept his fan base—and his grains—local.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

The last funhouse of its kind, where guests enter through the mouth of an 80-year-old blue whale.